The cause of type 1 diabetes mellitus is
a. excessive intake of simple sugars.
b. destruction of pancreatic beta cells.
c. inability of cells to respond to insulin in the bloodstream.
d. inability of the pancreas to keep up with the body's demands for insulin.
B
Type 1 diabetes mellitus is caused by autoimmune destruction of pancreatic beta cells. Excessive sugar intake does not cause any kind of diabetes mellitus. Type 2 diabetes is caused by inability of cells to respond to insulin in the bloodstream. In type 1 diabetes the pancreas is not able to keep up with the body's demands for insulin, but the cause of this is destruction of beta cells.
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